(Write the answer directly) 2. A cuboid with a square bottom and a height of 20CM is exactly square when the side is unfolded. The surface area of this cuboid is (450 square centimeters) and the volume is (500 cubic centimeters).

4*5*20+2*5*5=

(Write the answer directly) 3. When three identical cubes are put together to form a cuboid, the surface area of the cuboid is 140 cm2, and the original surface area of each cuboid is (60 cm2).

6*( 140/ 14)

(column calculation) 4. Party A and Party B were originally from 46 yuan. Party A spent 12 yuan on story books and Party B spent 18 yuan on science books. At this time, the money left by the two people is just equal. How much money do A and B have?

After Party A and Party B buy books, there is still 46-12-18 =16 yuan left.

Because the money left by the two people is equal, each person has 16/2=8 yuan.

So A originally had 12+8=20 yuan.

B Originally 18+8=26 yuan.

A: A originally had 20 yuan, and B originally had 26 yuan.